1. occurring without change in entropy; relating to a process in which entropy remains constant
Usage: technical; thermodynamics

Examples

• An isentropic process is an idealized thermodynamic process that occurs without any increase in entropy.
• Engineers use isentropic efficiency to measure how well a turbine performs compared to an ideal isentropic expansion.
• In an isentropic compression, the gas is compressed without any heat loss to the surroundings.
• The isentropic flow assumption simplifies calculations in aerodynamics and fluid mechanics.
• Real-world processes are never truly isentropic because some energy is always lost as heat.